EP 2411755 B1 20160615 - FIREARM GAS PISTON OPERATING SYSTEM
Title (en)
FIREARM GAS PISTON OPERATING SYSTEM
Title (de)
BETRIEBSSYSTEM FÜR EINEN FEUERWAFFENGASKOLBEN
Title (fr)
SYSTÈME D'ACTIONNEMENT DE PISTON À GAZ POUR ARME À FEU
Publication
Application
Priority
- US 2010027782 W 20100318
- US 40983909 A 20090324
Abstract (en)
[origin: WO2010111109A1] A gas piston operating system for an autoloading firearm. The gas piston system may include a barrel having a longitudinally-extending bullet pathway, a gas block defining a piston bore, a passageway fluidly connecting the bore with the bullet pathway for diverting combustion gas from the pathway to the bore upon discharging the firearm, and a piston slidably disposed in the bore for reciprocating movement. In one embodiment, the piston includes a head having an axially-extending protrusion projecting towards the passageway. The protrusion is configured for slidable insertion into the passageway. The piston is movable from a first actuation position in which the protrusion is inserted into the passageway to a second actuation position in which the protrusion is at least partially withdrawn from the passageway. The protrusion acts to pretension a mechanical linkage between the piston and a reciprocating bolt assembly.
IPC 8 full level
CPC (source: EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010111109 A1 20100930; EP 2411755 A1 20120201; EP 2411755 A4 20131016; EP 2411755 B1 20160615; US 8161864 B1 20120424
DOCDB simple family (application)
US 2010027782 W 20100318; EP 10756623 A 20100318; US 40983909 A 20090324